Improvement in wash-boards



J. s. BROOKS,

Improvement in Washoards.

No, 131,24@ Patented sep.1o,`1a72. u

' WAM Uivrrnn STATES PATENT OFFICE.

JOHN S. BROOKS, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN WASHBCARDS.

Specification forming part of Letters Patent No. 131.246, datedSeptember 10, 1872; antcdated September 7, 1872.

Specification describing a certain Improvement in Wash-Boards, inventedby JOHN S. BROOKS, of the city of Rochester, in the county of Monroe,and State of New York.

This invention consists in thickening the corrugations of a metallicwash-board, in order to produce a better wearing-surface, and ltoprevent as much as possible the cracking and breaking of the metal.

In the drawing, Figure l is a sectional elevation of a wash-boardshowing my improvement; Fig. 2, a diagram ,showing the method of fillingthe corrugations 5 Fig. 3, aview, showing a modified form of producing athickening ofthe corrugations.

A represents the frame, and B the corrugated metallic plate which formsthe rubbingsurface. The corrugations a c of this plate are stamped,rolled, or struck up of ordinary form. In order to produce a thickeningof the apexes of the corrugations, to produce a better wearing-surface,and to prevent cracking and breaking, I have several methods ofprocedure: First, narrow strips of metal or alloy, c c, may be cut froma sheet and laid into the corrugations of the plate, which have beenpreviously moistened with acid, and a hot vstamp may then come down andmelt the strips to solder them in place, as shown at the right hand inFig. 2. The stamp, of course, is provided with a series of nipples ordies of proper form to strike into the corrugations. The strips in thiscase must be more fusible than the plate. Second, the plate, having beeninoistened with acid, may be fed under a large spout or hopper having aseries of hollow nipples with small apertures or orifices in their endswhich fit closely in the corrugations and feed a continuous stream intoeach as the plate is fed along, as shown at the left in Fig. 2. Thisproduces the same soldering action as at first described. The spout orhopper which contains the molten metal must have connection with afurnace, either forming a part or detached, which will prevent coolingof the contents. If desired, a faucet orfaucets, or other graduatingdevice or devices, may be employed to gage the iiow of the material, ora force pump may be employed to force air into the receptacle to exertpressure to feed the material downward. Third, in the primary processot1 rolling the sheets, enlargements b b may bc formed upon the same atsuitable intervals apart, which, when the plate is stamped or struck up,come at the apexes and form eXtra thicknesses, as shown in Fig. 3.Fourth, narrow strips of metal more fusible than the plate may be cutand laid in the cavities after being moistened with acid, as at firstdescribed, and the plate itself may then be placed in an oven and heatedtill the strips melt and solder in place. All these plans accomplish thesame result-viz., they thicken the apexes of the corrugations andstiften and strengthen the plate, prevent cracking or breaking, andfurnish a greatly-increased wearin g-surface. One orboth sides of theplate may be treated in this way and as zinc and lead are very cheap,the cost is but slightly enhanced. The frame A has grooves fj' in thesides, in which slides a headblocl-z, g, to a suitable height to leavethe soap receptacle h. The corrugated plate is then slipped in `placeand is followed by a follower, la, held by set-screws m passing throughfixed cross-piece p. By this means the corrugated plate may be insertedeither side outward, and may be removed at pleasure. I contemplate,

in some instances, filling the whole back of the y f corrugated platewith plastic material of any kind, so that it will form a solid fiatsurface, resting on the wooden back of the wash-board. What I claim, anddesire toY secure by Letters Patent, is-

As a new article of manufacture, a wasliboard, in which the apeXes ofthe corrugations are made thickened on one or both sides of the metallicplate, for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

JOHN S. BROOKS. Witnesses:

A. MANDEVLLLE, C. C. Onnrnnrnn.

